A trial will be held next month to determine whether Donald Sterling, who opposes his estranged wife's planned sale of the Los Angeles Clippers, was properly removed as an administrator for the family trust that owns the team.

The Associated Press

LOS ANGELES — A trial will be held next month to determine whether Donald Sterling, who opposes his estranged wife's planned sale of the Los Angeles Clippers, was properly removed as an administrator for the family trust that owns the team.

An attorney for Shelly Sterling went to probate court Wednesday to request a trial to confirm that as sole trustee she can proceed with the $2 billion sale to former Microsoft CEO Steve Ballmer.

The development is the latest in a legal tug-of-war that has ensued following the NBA's decision to ban Sterling for life after racist remarks he made emerged in a recording in April. Sterling is fighting the decision and suing the league for $1 billion.

The league has contended that Sterling's comments were bad for business and damaged both the Clippers and the NBA.

The trial, which was granted exceptionally quickly, will begin July 7 and last four days. The deadline for the sale is July 15, which is also the date the NBA Board of Governors is scheduled to vote on whether it will approve the sale.

Donald Sterling's lawyer, Bobby Samini, left the courthouse without comment after a clerk announced the trial schedule. Neither Sterling was present.

"I just want to resolve this as quickly as possible," NBA Commissioner Adam Silver told The Associated Press in Miami on Wednesday, when he appeared at an NBA Cares event.

The crux of the case will center on the question of whether the 80-year-old Sterling is mentally competent to be a co-trustee of The Sterling Family Trust, which gives him the authority to determine the team's future. According to the trust's terms, he can be ruled "mentally incapacitated" after being evaluated by two doctors, O'Donnell said.

According to court documents, three doctors examined Donald Sterling in May and concluded that he suffers from "mild cognitive impairment consistent with early Alzheimer's Disease" or some other forms of brain disease.

One doctor, James E. Spar, who is affiliated with the division of geriatric psychiatry at UCLA, said he believes "Mr. Sterling is at risk of making potentially serious errors of judgment, impulse control and recall in the management of his finances and his trust."

"In my opinion he is substantially unable to manage his finances and resist fraud and undue influence, and is no longer competent to act as trustee of his trust," Spar concluded.

Dr. Stephen L. Read, who also specializes in geriatric and forensic psychiatry in Los Angeles, said that X-ray and CT scans of Sterling's brain conducted May 16 showed "mild atrophy" of brain tissue.

Read said personal opinion and the statements of other doctors provide "solid grounds for the determination that Mr. Donald T. Sterling lacks the capacity to function as trustee of the Sterling family estate."

A third doctor, Meril S. Platzer, said during his examination Sterling was unable to spell the word "world" backward. He was unaware of the season, couldn't recall two objects after three minutes and had difficulty initially drawing a clock.

"The score is below normal for his age and advanced education," Platzer said.

She concluded that Sterling is unable to reasonably carry out the duties as lead trustee because of impaired information processing and short-term memory, among other problems.

Sterling had voluntarily gone to the doctors at the request of his wife, according to a person with knowledge of the proceedings who spoke on condition of anonymity because they were not authorized to discuss the details publicly.